The viscosity of atmospherically relevant organic particles.
The viscosity of atmospherically relevant organic particles.
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DOI：
10.1038/s41467-018-03027-z
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发表时间：
2018-03-06
影响因子：
16.6
通讯作者：
Rovelli G
中科院分区：
文献类型：
--
作者：
Reid JP;Bertram AK;Topping DO;Laskin A;Martin ST;Petters MD;Pope FD;Rovelli G
有机气溶胶颗粒在环境中的重要性早已确定，它影响云的形成和寿命，吸收和散射阳光，影响大气成分，并影响人类健康。传统上，周围的有机颗粒被认为是以液体形式存在的。最近对现场测量和实验室研究的观察表明，它们可能在某些条件下以高粘性半固体或无定形玻璃固体的形式存在，对大气化学、气候和空气质量具有重要影响。这篇综述探讨了我们对气溶胶颗粒相的理解，特别是通过测量有机颗粒的粘度来确定的，以及相态对大气的影响。大气中有机颗粒的相态对气溶胶对气候、能见度、空气质量和健康的影响具有重要影响。在这里，作者回顾了无定形玻璃颗粒形成的证据和气溶胶颗粒粘度的测定方法。
The importance of organic aerosol particles in the environment has been long established, influencing cloud formation and lifetime, absorbing and scattering sunlight, affecting atmospheric composition and impacting on human health. Conventionally, ambient organic particles were considered to exist as liquids. Recent observations in field measurements and studies in the laboratory suggest that they may instead exist as highly viscous semi-solids or amorphous glassy solids under certain conditions, with important implications for atmospheric chemistry, climate and air quality. This review explores our understanding of aerosol particle phase, particularly as identified by measurements of the viscosity of organic particles, and the atmospheric implications of phase state. The phase state of organic particles in the atmosphere has important consequences for the impact of aerosols on climate, visibility, air quality and health. Here, the authors review the evidence for the formation of amorphous glassy particles and the methods for determining aerosol particle viscosity.
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